WO2005087481A2 - Cutting tool - Google Patents
Cutting tool Download PDFInfo
- Publication number
- WO2005087481A2 WO2005087481A2 PCT/NL2005/000208 NL2005000208W WO2005087481A2 WO 2005087481 A2 WO2005087481 A2 WO 2005087481A2 NL 2005000208 W NL2005000208 W NL 2005000208W WO 2005087481 A2 WO2005087481 A2 WO 2005087481A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cutting
- blade
- belt layer
- operationally coupled
- control computer
- Prior art date
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 286
- 238000006073 displacement reaction Methods 0.000 claims description 53
- 230000008859 change Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 230000004044 response Effects 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
- B26D1/157—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis
- B26D1/16—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis mounted on a movable arm or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
- B26D1/157—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis
- B26D1/18—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis mounted on a movable carriage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
- B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
- B29D30/30—Applying the layers; Guiding or stretching the layers during application
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/38—Textile inserts, e.g. cord or canvas layers, for tyres; Treatment of inserts prior to building the tyre
- B29D30/46—Cutting textile inserts to required shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
- B26D3/003—Cutting work characterised by the nature of the cut made; Apparatus therefor specially adapted for cutting rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
- B26D3/28—Splitting layers from work; Mutually separating layers by cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/38—Textile inserts, e.g. cord or canvas layers, for tyres; Treatment of inserts prior to building the tyre
- B29D30/42—Endless textile bands without bead-rings
- B29D2030/421—General aspects of the joining methods and devices for creating the bands
- B29D2030/427—Positioning the bands at the joining areas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/38—Textile inserts, e.g. cord or canvas layers, for tyres; Treatment of inserts prior to building the tyre
- B29D30/44—Stretching or treating the layers before application on the drum
- B29D2030/4406—Adjusting the positions of the layers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
- Y10T156/1348—Work traversing type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/141—With means to monitor and control operation [e.g., self-regulating means]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/162—With control means responsive to replaceable or selectable information program
- Y10T83/173—Arithmetically determined program
- Y10T83/175—With condition sensor
- Y10T83/178—Responsive to work
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/768—Rotatable disc tool pair or tool and carrier
- Y10T83/7755—Carrier for rotatable tool movable during cutting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/768—Rotatable disc tool pair or tool and carrier
- Y10T83/7755—Carrier for rotatable tool movable during cutting
- Y10T83/7763—Tool carrier reciprocable rectilinearly
- Y10T83/7768—With means to adjust path of reciprocation
- Y10T83/7772—Angular relative to previous path
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/869—Means to drive or to guide tool
- Y10T83/8821—With simple rectilinear reciprocating motion only
- Y10T83/8822—Edge-to-edge of sheet or web [e.g., traveling cutter]
Definitions
- the invention relates to a cutting device for cutting a belt layer from a web of unvulcanised rubber having mutually substantially parallel cords that are at a cord angle.
- Such cutting devices are known from US-4.965.733, US-5.092.946 and US-5.327.353 wherein a circular blade is mounted on a blade axis.
- the blade itself has a fixed position on the blade axis.
- the blade axis is mounted on a holder which in turn is mounted in a frame.
- the cutting devices are provided with a first position detecting device for detecting the position of the blade holder in the frame, that means in the direction of the cut of the blade, and a second position detecting device for detecting the rotation of the blade holder with respect to the frame.
- the measurement results of the position detecting devices are used for determining whether the actual position of the blade corresponds with a predetermined cutting direction.
- the height of the blade holder is also measured by means of a third position detecting device.
- JP-A-06 106653 describes, as far as known, a cutting device having a blade in a blade holder that is rotatable.
- the blade holder is mounted on a rotatable frame connected to a control computer.
- a detecting device detects the displacement of the blade holder, and when the displacement is larger than the set value the control computer orders a motor to rotate the frame. However this turns out to be too slow and incapable of properly following the cords.
- a problem particularly with the cutting devices mentioned above is that the blades are not always capable of correctly following the cords, despite the measures taken.
- the invention regards a cutting device for, in a cutting direction, cutting a belt layer from a web of unvulcanised rubber having mutually substantially parallel cords that are at a cord angle, comprising: a blade which sideward with respect to the cutting direction, is freely movable; - a first detector for during cutting detecting a sideward displacement of the blade; a control computer, operationally coupled to the first detector, for giving control instructions on the basis of displacement information from the detecting means regarding sideward displacement of the blade; at least one actuator, operationally coupled to the control means for during cutting adjusting the cutting direction of the blade on the basis of the control instructions.
- the blade itself is displaceable in sideward direction and location detectors are present for measuring (changes of) the location of the blade itself, a simple cutting device is provided wherein the actual course of the cutting line can very easily be detected. Moreover the reliability and the speed are improved due to the simple structure.
- the first detector is adapted for almost continuously detecting sideward displacement.
- the first detector is operationally coupled to the control computer for on the basis of displacement during cutting giving control instructions. Particularly each displacement is directly fed back to control computer, and the control computer gives instructions for directly following the displacement. As a result the blade will hardly change position with respect to the rest of the cutting device, yet will indeed follow the course of a cord.
- the blade is freely displaceable perpendicular to the cutting direction.
- the blade is a circular blade on a blade axis.
- the blade is displaceable on the blade axis.
- the circular blade is freely slidable over the blade axis, resulting in a very simple structure. Moreover the mass to be displaced is minimal, and the blade is capable of moving quickly.
- the cutting device further comprises a frame wherein the blade is mounted so as to be displaceable in the cutting direction, wherein the frame is rotatable about an axis of rotation that intersects the cutting line perpendicularly, and is perpendicular to the belt layer.
- the axis of rotation intersects the centre of the width of the belt layer.
- the actuator is connected to the frame in order to rotate the frame about the axis of rotation.
- the actuator in particular rotates the frame in order to directly follow the displacement of the blade. That means that the frame rotates in the direction of the displacement of the blade. As already stated the blade will hardly be displaced with respect to the frame as a result.
- the frame is frame-shaped having an upper frame member and a lower frame member, and the blade is attached so as to be movable along the upper frame member.
- the blade is provided with heating means for heating the blade.
- the invention further relates to a cutting device for, in a cutting direction, cutting a belt layer from a web of unvulcanised rubber having mutually substantially parallel cords that are at a cord angle, comprising cord following means for following a cord during cutting, and detecting means for detecting the resulting course of the cutting line during cutting.
- the cord following means comprise an actuator for during cutting adjusting the cutting direction.
- the cord following means comprise sensing means for sensing a cord and which are operationally coupled to the actuator.
- the sensing means are adapted for sensing a change of the direction of a cord, and preferably are operationally coupled to the actuator, the actuator giving a signal to change the cutting direction in order to follow the changed cord direction when a change of the direction of the cord is detected.
- the invention further relates to a device for arranging a belt layer provided with parallel cords on a building drum, particularly for a broad tyre such as a truck tyre, comprising:
- a cutting device for cutting a belt layer from a web at a cutting angle along a cutting line along a cord, for obtaining a substantially parallelogram-shaped belt layer having a leading diagonal side and a trailing diagonal side and cords at a cord angle that is almost parallel to the diagonal sides and the cutting angle; a first sensor for measuring the cutting line; - a second sensor for measuring the belt layer length;
- control computer operationally coupled to the first and second sensors and provided with a memory for storing a set cord angle, belt layer width and belt layer length, provided with software routines for comparing the measured cutting line with the set cord angle and belt layer width, and the measured belt layer length with the set belt layer length and the giving of reference values and control signals based on the reference values;
- an applicator for arranging the belt layer on the building drum with the trailing diagonal side parallel to the leading diagonal side, and operationally coupled to the control computer for receiving control signals therefrom.
- the applicator is adapted for arranging the belt layer on the building drum with the centre line of the leading part and the centre line of the trailing part opposite each other in line.
- the applicator is adapted for arranging the trailing diagonal side in a butting way against the leading diagonal side. Particularly when the centre lines are opposite each other in line, the ends butting each other, it is possible to realise the optimal belt layer. Particularly when moreover the cutting lines realised at the leading side and the trailing side are known an optimal belt layer can be made around a building drum.
- the applicator comprises a conveying device having driving means, a supply side and a discharge side, for conveying the belt layer in a conveyance direction from the cutting device at the supply side to the building drum at the discharge side, wherein the conveying device comprises a retaining means for retaining a segment of the belt layer on the conveying device free of shifting sidewards with respect to the conveyance direction.
- the retaining means is adapted for retaining the entire belt layer.
- the conveying device comprises a conveyor belt and the retaining means comprises magnets or electromagnets for retaining belt layers having steel cords onto the conveyor belt or a vacuum device or pressing means for retaining belt layers provided with other types of cords.
- the retaining means can be switched on and off. The retaining means is then operationally coupled to the control computer, the control computer giving control signals to the retaining means for switching it on and off.
- the device further comprises a supply device for displacing the web to the cutting device, and after cutting displacing the belt layer cut from the web to the supply side of the conveying device at a discharge side of the supply device.
- the supply side of the conveying device and the discharge side of the supply device are displaceable with respect to each other laterally with respect to the conveying device and parallel to the axis of rotation of the building drum, particularly during conveying a belt layer.
- the supply device is equipped with an actuator for that purpose.
- the actuator is coupled to the control computer.
- the control computer gives control signals to the actuator when the reference values show differences between the set values and the values determined by means of the first and second sensor.
- the applicator comprises a first measuring device for measuring the shape of the cutting line of the leading diagonal side, and said measuring device is operationally coupled to the control computer.
- the applicator comprises a second measuring device, operationally coupled to the control computer, for measuring the length of a belt layer.
- Said sensor particularly comprises an encoder and means for reading the encoder for determining the displacement distance, and an image recorder for determining when the leading and trailing ends of the belt layer pass the sensor.
- the control computer is operationally coupled to the driving means and the building drum drive for mutually adjusting the winding speed of the building drum and the conveyance speed of the conveying device based on the length and the shape of the leading and trailing cutting lines of the belt layer.
- the first sensor is adapted for measuring the cutting line during cutting.
- the cutting device is provided with a blade and detectors for detecting the position of the blade during cutting, wherein the detectors are operationally coupled to the control computer, wherein the cutting device with detectors form the first sensor.
- the control computer is provided with software having a cutting line calculation routine for calculating the realised cutting line from the determinations of the blade position during cutting. Particularly when the cord position in the belt layer is known the ends of the belt layer can be placed in optimal abutment on the building drum, the cords almost parallel and without so-called "dog-ears".
- the cutting device comprises a rotation driving device for having the cutting angle adjusted during cutting, wherein the rotation driving device is operationally coupled to the control computer for adjusting the cutting angle.
- the blade is freely movable during cutting in sideward direction with respect to the cutting line, and the cutting device is provided with a second location detector for detecting the sideward position of the blade.
- the second location detector is operationally coupled to the control computer, for when detecting a change in the sideward position having the control computer give a control signal to the rotation driving device for adjusting the cutting angle.
- the software of the control computer is provided with a cutting routine for determining a sideward displacement of the blade from measurement values from the second location detector and giving control instructions to the rotation driving device related to the sideward displacement.
- the cutting device is provided with a blade that is freely movable perpendicular to the cutting direction, a second location sensor for detecting the sideward position of the blade, and a rotation driving device for having the blade rotate about an axis perpendicular to the belt layer that is being cut, wherein the location sensor is operationally coupled to the rotation driving device for in response to a displacement of the blade detected by the location sensor activating the rotation driving device.
- the cutting device further comprises a first location sensor for detecting the position of the blade along the cutting line, and wherein the rotation driving device and the first location sensor are operationally coupled to the control computer for providing location information, and the control computer further comprises a cutting line calculation routine for calculating the shape of the cutting line from the location information from the first and second location sensors.
- the invention further relates to a method for arranging a belt layer provided with parallel cords on a building drum, particularly for a broad tyre such as a truck tyre, using a device according to an embodiment described above, further provided with a supply device, comprising the following steps: a. setting a cord angle, a belt layer length and a belt layer width in the control computer of the device; b. supplying a web on a roll, wherein the front side of the web is arranged on the supply device; c. activating the device; after which subsequently: d. the supply device conveys the web to the cutting device, wherein the front side of the web is conveyed a belt layer length past the cutting line of the cutting device; e.
- the cutting device cuts a belt layer from the web at the set cutting line, wherein the first sensor measures the cutting line during cutting, wherein the measured values of the cutting line are entered into the control computer; f. the cut belt layer is passed past the second sensor whereby the belt layer length is measured, which measured belt layer length is entered into the control computer; g. the control computer compares the measured cutting line and belt layer length with the set values for the cord angle, belt layer length and belt layer width; h. the control computer performs a calibration on the supply device, the cutting device and the applicator based on the differences between the set values and the measured values; i. the first belt layer is removed from the device; after which the steps d. up to and including h. are repeated until the roll is finished.
- the invention further relates to a cutting device for, in a cutting direction, cutting a belt layer from a web of unvulcanised rubber having mutually substantially parallel cords that are at a cord angle, comprising: - a blade which perpendicular to the cutting direction is freely movable;
- control computer operationally coupled to the first detector, for giving control instructions based on the displacement information from the detecting means regarding the displacement of the blade; at least one actuator, operationally coupled to the control means, for during cutting directly following the cutting direction of the blade based on the control instructions.
- the invention relates to a cutting device for, in a cutting direction, cutting a belt layer from a web of unvulcanised rubber having mutually substantially parallel cords that are at a cord angle, comprising: - a blade which sideward with respect to the cutting direction is freely movable; a first detector for during cutting detecting a sideward displacement of the blade; a control computer, operationally coupled to the first detector, for giving control instructions based on the displacement information from the detecting means regarding the displacement of the blade; at least one actuator, operationally coupled to the control means, for during cutting directly following the cutting direction of the blade based on the control instructions.
- the invention furthermore relates to a cutting device for, in a cutting direction, cutting a belt layer from a web of unvulcanised rubber having mutually substantially parallel cords that are at a cord angle, comprising: a circular blade on a blade axis that is freely slidable over the blade axis; - a first detector for during cutting detecting a sideward displacement of the circular blade; a control computer, operationally coupled to the first detector, for giving control instructions based on displacement information from the detecting means regarding the displacement of the circular blade; at least one actuator, operationally coupled to the control means, for during cutting directly following the cutting direction of the blade based on the control instructions.
- the first detector is fixedly connected to the cutting device and said detector detects displacement of the blade with respect to the further cutting device.
- a further detector detects the position or orientation of the cutting device with respect to a centre line of a belt layer to be cut, or with respect to a cutting table or conveying device on which a belt layer to be cut sits during cutting.
- Figure 1 shows a belt layer
- Figure 2 shows a belt layer with cutting device and several relevant angles
- Figures 3A-C show possibilities for a splice of a belt layer, in cross- section of the belt layer
- Figure 4 shows a splice according to the known principle
- Figure 5 shows a splice according to a principle of an aspect of the invention
- Figures 6A-6H show the belt layer application device when operative
- Figure 7 shows a cutting device according to another aspect of the invention.
- Figure 8 shows a front view of the cutting device in detail
- Figure 9 shows a detail of the blade of the cutting device according to the invention.
- Figure 1 0 shows a rear view of the cutting device with conveyor belt
- Figures 1 1 A and 1 1 B show a top view and a side view, respectively, of a complete device for arranging a belt.
- Figure 1 shows a top view of a belt layer 1 of unvulcanised rubber having cords 2 incorporated therein.
- a belt layer has a leading end 3, a trailing end 4, a width b and a cord angle ⁇ .
- the cords 2 have a mutual cord distance d.
- the belt layer 1 has a rectangular part having a length I and a tip having tip length s.
- the belt layer has a longitudinal axis (indicated with a dotted line) and a belt layer length GL.
- Figure 2 shows a belt layer having a cutting device 5 depicted therein, a cutting angle ⁇ 1 of the leading end 3 of the belt layer 1 .
- the belt layer 1 is cut off from a continuous strip that continues under cutting device 5 in a conveyance direction T.
- the cutting device is still positioned at an angle ⁇ 1 .
- the strip will be cut at an angle ⁇ 3 to form the belt layer 1 .
- Figure 3A shows a small part of a belt layer wrapped around a building drum, in cross-section perpendicular to the cords, wherein the leading end and the trailing end in a butt splice L is made correctly.
- the unvulcanised rubber 6 and the cords 2 are shown in the cross-section of the belt layer 1 .
- the cord distance d at the location of the splice is just as large as the cord distance d in the rest of the belt layer.
- Figure 3B again shows a cross-section of a belt layer 1 once arranged on the drum in the same way as in figure 3A, wherein this time the distance between two cords 2a and 2b between which splice L is made is twice the cord distance d. This is the maximum allowable situation according to regulations.
- Figure 3C shows the same cross-section as in figures 3A and 3B, however, with an unallowable situation wherein two cords 2a and 2b lie over each other. There is an overlap. For the sake of clarity the desired situation is shown in dotted lines. In a tyre this will result in an unequal distribution of weight and a bulge in the tyre. It is among other things an object of the invention to make a splice which corresponds as much as possible with the splice as shown in figure 3A, the situation
- FIG 3B being the ultimate and avoiding the situation of figure 3C.
- Figure 4 shows the old way of placing the belt layer ends against each other on the drum 1 1 . In that case the tip of the trailing side 4 of belt layer 1 was cut at cutting angle ⁇ ', butting against the obtuse angle of the leading side 3 that is cut at cutting angle ⁇ . It will be clear that in this situation there will always be space left between the ends 3, 4 due to the unequal cutting angles.
- the cutting angles may be unequal due to deviations in the cutting device, or due to deviations in the cord angle, or due to deformations during conveyance or stress in the material.
- Figure 5 shows the situation according to the invention, wherein due to the total measurement of the shape of the belt layer 1 and the exact knowledge of the position and the course of the cords a better splice possible.
- the belt layer 1 is in this case again almost arranged around building drum 1 1 .
- the centre S3 of the leading side 3 and the centre S4 of the trailing side 4 were placed opposite each other and the cords of the leading side 3 and the trailing side 4 were placed parallel, for instance in a manner as explained in figures 6A-6H, so that a possible remaining splice opening that may possibly remain is in any case a parallel opening. As a result in any case no overlap will arise and it is possible to have the ends abut each other directly.
- Figures 6A-6H consecutively the different steps of the device according to the invention when operative, seen from above.
- Figure 6A shows a tread application device according to the invention.
- the figure shows a building drum 1 1 having axis of rotation x and a conveying device 8 provided with a cutting device 5.
- a continuous strip 1 2 is supplied in the direction T by supply device 8, past the cutting device 5.
- Conveying device 8 consists of a first feed conveying device 1 3, in this case a conveyor belt, particularly two parallel conveyor belts 1 3a and
- the feed conveying device 1 3 and discharge conveyor belt are furthermore provided with a turn or rotation point R as a result of which the discharge side 1 5 of the feed conveying device 1 3 is capable of moving transverse to the conveyance direction T with respect to the feed side 1 8 of the discharge conveyor belt 1 4 and reciprocally (indicated with arrows C) in the plane of the belt layer.
- the feed conveying device 1 3 and discharge conveyor belt are furthermore provided with a turn or rotation point R as a result of which the discharge side 1 5 of the feed conveying device 1 3 is capable of moving transverse to the conveyance direction T with respect to the feed side 1 8 of the discharge conveyor belt 1 4 and reciprocally (indicated with arrows C) in the plane of the belt layer.
- the feed conveying device 1 3 and discharge conveyor belt are furthermore provided with a turn or rotation point R as a result of which the discharge side 1 5 of the feed conveying device 1 3 is capable of moving transverse to the conveyance direction T with respect to the feed side 1 8 of the discharge conveyor belt 1 4 and
- the length of the discharge conveying device 1 4 is larger than the belt layer length GL, as a result of which during the arrangement of a belt layer the feed conveying device 1 3 is free to produce the next belt layer.
- the length of the feed conveying device 1 3 between the discharge side 1 5 and the cutting device 5 is also larger than GL.
- Figure 6B shows the situation in the process wherein the continuous strip 1 2 has been passed past the cutting device 5 with the set belt layer length GL and the cutting device 5 is going to cut the continuous strip 1 2 as soon as the desired length has been passed so that after cutting a belt layer 1 is created.
- This figure also shows the position of the measurement device 7, preferably a (digital) camera or line scan camera, for measuring the strip while it passes by.
- the measurement device 7 is positioned at a transition 50 between conveying device 1 3 and conveyor belt 1 4. In this case a camera is positioned below the transition with a light beam above it.
- the end 1 5 of the conveyor belt 1 3 will reciprocate (if necessary) about axis of rotation R with respect to the feed side 1 8 of conveyor belt 1 4, driven by means of driving motor 1 9 in order to properly position the strip and possible adapt the shape on the conveyor belt 14.
- driving motor 1 9 By means of magnets (in case of steel cord reinforcement) the strip (in the end belt layer) is secured to the conveyor belt 14.
- Driving motor 19 is, optionally via a computer or another control device, operationally coupled to measurement device 7.
- Figure 6C shows the situation wherein the strip 1 2 is cut and a part of the belt layer 1 has already passed by the measurement device 7 and has been measured.
- Figure 6D shows the situation in which the cutting device 5 is cutting the strip, wherein the strip does not move.
- the cutting line of the cutting device 5 is measured meanwhile, whereas the measurement values are also used again to regulate the cutting direction of the cutting device.
- the measurement values are detected by means of location detectors 21 0 that are coupled to the control unit 1 80.
- the control unit calculates whether a correction of the cutting angle is necessary, and forwards possible corrections to the actuator 200 which adjust the cutting angle of the cutting device 5 by rotation of the cutting device, indicated with arrow K.
- Figure 6E shows the situation wherein a belt layer 1 has been cut from the strip 1 2 and the belt layer 1 is conveyed in the direction T by means of conveyor belt 1 4 whereas the rest of the continuous strip remains at the cutting device 5. The entire belt layer has been placed on the discharge conveying device 1 4 and is secured thereon.
- Figure 6F shows the situation wherein the belt layer 1 is supplied to the drum 1 1 .
- the conveyor belt 1 4 is moved in its entirety towards the building drum 1 1 in the direction V whereas the belt layer is secured thereon. During the application the position of the belt layer is no longer changed.
- the belt layer is secured here on the discharge conveying device 14.
- the discharge conveying device 1 4 applies the belt layer 1 against the lower side of the drum.
- the belt layer 1 can also be at the lower side of the conveyor belt 1 4 and be applied against the upper side of the drum.
- the building drum 1 1 is brought into rotation, whereas the conveyor belt 1 4 is near the building drum and applies the belt layer against the building drum.
- the belt layer is situated on the conveyor belt and the conveyor belt is situated near the lower side of the building drum.
- the operation of the device according to the invention is as follows. When a new roll of continuous rubber material provided with cords at a cord angle is placed on the machine, the desired belt layer length, the width of the belt layer and the cord angle are set in the control computer 1 80. The beginning of the web is passed underneath the cutting device and a first cut is made. The web is subsequently conveyed past the cutting device wherein a measured-out length passes the cutting device. After cutting, the length is measured.
- the measured belt layer length and the cutting lines that have been measured during the cutting are compared to the set cutting angle and the set belt layer length.
- the first belt layer that is cut is subsequently taken from the conveyor belt by an operator if the measured value does not correspond to the set value.
- the process is repeated with adjusted machine settings (adjusted by the control computer on the basis of comparison of the measured values to the set values), until the measured values do correspond (within tolerance) to the set values after which the machine has in fact been tuned and is able to produce the actual length desired: From the difference between the measured and the set belt layer length and the difference between the set cord angle and the measured cutting lines the conveying distance of the web is calculated, for making the next belt layer.
- the belt layer length and the shape of the belt layers can become more and more accurate by each time adjusting the conveying distance.
- FIG. 7 shows a front view of a cutting device 5 according to the invention.
- the cutting device is provided with a circular blade 1 10 on a blade axis 1 40 in a blade holder 1 20.
- the blade holder 1 20 is attached to an attachment body.
- the cutting device furthermore has a frame 1 07 that in this case passed underneath the conveyor belt 1 3.
- the frame rests in this case on an actuator 200 that is capable of having the frame rotate about an axis R2 perpendicular to the cutting plane and in the middle through conveyor belt 1 3.
- the frame has an upper beam 1 06.
- the cutting device furthermore has a cut ruler 105 that runs over the conveyor belt 1 3 and underneath a belt layer to be cut.
- the attachment body 1 30 is mounted to the upper beam 1 06 so as to be movable along upper beam 1 06 and is driven by means of drive 1 00.
- First location detectors detect the position of the centre of the blade 1 1 0 (in this case near R2) with respect to the conveyor belt 1 3. In a simple embodiment for instance the course of drive 1 00 can be detected.
- the position (cutting angle) of the frame 107 with respect to the conveyor belt 1 3 can be determined for instance from the actuator 200 in a simple embodiment.
- both attachment bodies 1 30 and 1 30' are mounted one after the other each having a blade, wherein the cutting lines of both blades are in line with each other.
- both attachment bodies 1 30 and 1 30' are able to move to one side each so that each blade cuts one half of a strip. In this way the cutting motion can be made in half the time, which may result in a considerable gain in production efficiency.
- the control of the rotation device can be coupled to one of either blades, that means one of either blades can be provided with a location detector for sideward displacement and said location detector can be coupled to the control device.
- both blades can be provided with location detectors for sideward displacement.
- the control device is able to average both values from both detectors and control the frame, that means its rotation, based on said average values. The idea is that when a deviation occurs in the cord direction, this will be counteracted by way of this cutting direction.
- Figure 8 shows an enlargement of the blade 1 1 0 with blade holder 1 20 and blade axis 1 40 in front view with respect to the blade 1 10, that means in the cutting direction.
- the blade is freely movable over the blade axis 1 40, sideward in the direction Z.
- the blade axis 1 40 is furthermore provided with heating means 1 60 through the blade axis in order to heat the blade 1 10.
- the blade 1 1 0 is better capable of following the cord unimpeded in the belt layer 1 .
- the frame is furthermore provided with a cutting guide 1 05 which - when the cutting device is operative- continues under the continuous strip and over which the blade 1 1 0 runs.
- Figure 9 shows a view of another embodiment of the cutting device, which as regards operation corresponds with what has been described above.
- the blade 1 1 0 is arranged here on a blade axis 1 40 having free ends and a stop 1 50. Up to the stop the blade 1 10 is able to slide freely over the axis 1 40 in sideward direction. As only the circular blade is able to slide freely over the blade axis during cutting, the blade is able to follow the cord almost unimpeded.
- the regulation of the frame is indeed such that the blade does not move or moves as little as possible during cutting: as soon as displacement takes place the control computer will intervene and the frame will move along with the displacement in order to prevent that the blade moves or slides further.
- the direction of rotation of the frame will therefore indeed be in the same direction as the displacement of the blade.
- the object is that the blade follows a cord, as the cutting direction is almost instantaneously adjusted. As a result the frame will rotate and the blade will hardly move at all.
- the detector therefore preferably is capable of detecting small displacements.
- the cutting device is in this case provided with a location or displacement detector 1 70 with which the sideward displacement or location of the blade 1 10 over or on the blade axis 140 can be measured.
- said detector 1 70 is a laser having a measurement cell.
- the detector 1 70 is operationally coupled to a control computer 1 80.
- the control unit 1 80 by means of operational coupling 1 90 will order the actuator 200 to steer so that no displacement of the blade 1 1 0 in sideward direction takes place any more. In this way the blade is able to perfectly follow the cords in the belt layer. From the control of the actuator 200 moreover the exact cutting line realised can be calculated.
- the control unit therefore preferably is capable of giving the instructions so quickly that the blade is hardly displaced at all. Moreover the frame rotates in the direction of the detected displacement.
- Figure 1 0 shows a rear view of the conveyor belt 1 3 which has to displace a strip past the cutting device 5.
- the conveyor belt actually consists of two parallel conveyor belts 1 3a and 1 3b that can be driven independent from each other. Said embodiment with parallel conveyor belts 1 3a and 1 3b is also possible in the figures 6A-6B.
- conveyor belt 1 3b will convey the cut belt layer onwards.
- the belt layer in that case is fixed to said conveyor belt by means of magnets, preferably switchable magnets, which are situated beyond the cutting device, conveyor belt 1 3a stands still in that case. Upstream of the cutting device there are switchable magnets underneath said conveyor belt 1 3a to retain the rest of the strip at that location.
- Figure 1 1 A shows a top view and figure 1 1 B shows a side view of a complete device for building a belt.
- the belt layers are conveyed to building drum 1 1 by means of conveyor belt 14 (like in figures 6) and conveyor belt 1 4'.
- the figure furthermore shows the various cutting devices 5 that correspond to the cutting device described above.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Textile Engineering (AREA)
- Tyre Moulding (AREA)
- Nonmetal Cutting Devices (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2005800131581A CN1946544B (en) | 2004-03-18 | 2005-03-18 | cutting tool |
US10/592,884 US8677871B2 (en) | 2004-03-18 | 2005-03-18 | Cutting device |
BRPI0508882-8A BRPI0508882A (en) | 2004-03-18 | 2005-03-18 | cutting device |
JP2007503856A JP2007529344A (en) | 2004-03-18 | 2005-03-18 | Cutting device |
KR1020067021486A KR101140074B1 (en) | 2004-03-18 | 2005-03-18 | Cutting tool |
EP20050722062 EP1727667B1 (en) | 2004-03-18 | 2005-03-18 | Cutting tool |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1025767 | 2004-03-18 | ||
NL1025764 | 2004-03-18 | ||
NL1025764A NL1025764C2 (en) | 2004-03-18 | 2004-03-18 | Cutting device for cutting belt layer from unvulcanized rubber, controls actuator to control sideward movement of blade, when detected sideward movement of blade is more than preset value |
NL1025767A NL1025767C2 (en) | 2004-03-18 | 2004-03-18 | Cutting device for cutting belt layer from unvulcanized rubber, controls actuator to control sideward movement of blade, when detected sideward movement of blade is more than preset value |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005087481A2 true WO2005087481A2 (en) | 2005-09-22 |
WO2005087481A3 WO2005087481A3 (en) | 2005-12-22 |
Family
ID=34962182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NL2005/000208 WO2005087481A2 (en) | 2004-03-18 | 2005-03-18 | Cutting tool |
Country Status (7)
Country | Link |
---|---|
US (1) | US8677871B2 (en) |
EP (1) | EP1727667B1 (en) |
JP (1) | JP2007529344A (en) |
KR (1) | KR101140074B1 (en) |
BR (1) | BRPI0508882A (en) |
RU (1) | RU2359829C2 (en) |
WO (1) | WO2005087481A2 (en) |
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2005
- 2005-03-18 WO PCT/NL2005/000208 patent/WO2005087481A2/en active Application Filing
- 2005-03-18 US US10/592,884 patent/US8677871B2/en not_active Expired - Fee Related
- 2005-03-18 JP JP2007503856A patent/JP2007529344A/en active Pending
- 2005-03-18 BR BRPI0508882-8A patent/BRPI0508882A/en not_active IP Right Cessation
- 2005-03-18 EP EP20050722062 patent/EP1727667B1/en not_active Expired - Lifetime
- 2005-03-18 RU RU2006136793A patent/RU2359829C2/en not_active IP Right Cessation
- 2005-03-18 KR KR1020067021486A patent/KR101140074B1/en not_active Expired - Fee Related
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9168709B2 (en) * | 2008-12-11 | 2015-10-27 | Pirelli Tyre S.P.A. | Process and apparatus for manufacturing tyres for vehicle wheels |
US20130199349A1 (en) * | 2009-12-24 | 2013-08-08 | Michelin Recherche Et Technique S.A. | Method and device for measuring the ply angle prior cutting |
US9539737B2 (en) * | 2009-12-24 | 2017-01-10 | Compagnie Generale Des Establissements Michelin | Method and device for measuring the ply angle prior to cutting |
WO2012139556A1 (en) * | 2011-04-12 | 2012-10-18 | Harburg-Freudenberg Maschinenbau Gmbh | Method and device for aligning a belt strip |
US9132596B2 (en) | 2011-04-12 | 2015-09-15 | Harburg-Freudenberger Maschinenbau Gmbh | Method and device for aligning a belt strip |
WO2014155258A1 (en) | 2013-03-28 | 2014-10-02 | Pirelli Tyre S.P.A. | Process and apparatus for manufacturing tyres for vehicle wheels |
CN103737952A (en) * | 2014-01-02 | 2014-04-23 | 天津赛象科技股份有限公司 | Collecting type 90-degree steel wire cord fabric cutting machine and control method thereof |
Also Published As
Publication number | Publication date |
---|---|
US8677871B2 (en) | 2014-03-25 |
WO2005087481A3 (en) | 2005-12-22 |
RU2359829C2 (en) | 2009-06-27 |
KR20060129091A (en) | 2006-12-14 |
US20100294099A1 (en) | 2010-11-25 |
BRPI0508882A (en) | 2007-09-11 |
EP1727667B1 (en) | 2013-02-27 |
RU2006136793A (en) | 2008-04-27 |
EP1727667A2 (en) | 2006-12-06 |
JP2007529344A (en) | 2007-10-25 |
KR101140074B1 (en) | 2012-04-30 |
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